Multiplex Communication Circuit - Air Conditioning System (for Manual Air Conditioning System)

AIR CONDITIONING: AIR CONDITIONING SYSTEM (for Manual Air Conditioning System): B1499/99: Multiplex Communication Circuit

DTC B1499/99 - Multiplex Communication Circuit

DESCRIPTION

The air conditioning amplifier communicates data with the ECM and combination meter through the CAN communication system.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC OUTPUT
(a) Clear the DTC Air Conditioning System (for Manual Air Conditioning System).
(b) Check for DTC Air Conditioning System (for Manual Air Conditioning System).
OK:
DTC B1499/99 is not output.
NG -- GO TO CAN COMMUNICATION SYSTEM
OK -- USE SIMULATION METHOD TO CHECK